java继承语法及实例

java继承语法及实例

语法：

public class Childextends Person

例子：

public class Person

{

private Stringname;

private int age;

private intweight;

publicPerson(String name, int age){

this.name =name;

this.age = age;

}

publicPerson(String name, int age, int weight){

this(name,age);

this.weight =weight;

}

public intgetAge(){

return this.age;

}

}

public class Childextends Person

{

private Stringname;

private int age;

private intweight;

publicChild(String name, int age, int weight){

super(name,age,weight);// 此时，必须显式调用父类的构造函数

}

public intgetWeight(){

returnsuper.getAge(); // 同样可以写成this.getAge()

}

}

本文来源 我爱IT技术网 http://www.52ij.com/jishu/4766.html 转载请保留链接。